Aspose.OCR for C++ 23.10.0 - Release Notes

Deprecation warning

What was changed

Public API changes and backwards compatibility

This section lists all public API changes introduced in Aspose.OCR for C++ 23.10.0 that may affect the code of existing applications.

Added public APIs:

The following public APIs have been introduced in this release:

defect_type.ASPOSE_OCR_CURVED_TEXT enumeration

Enables automatic detection of image areas containing cylindrical curvature distortions, which may negatively affect recognition accuracy or even result some texts not to be recognized.

defect_type.ASPOSE_OCR_BLURED_IMAGE enumeration

Allows you to automatically detect blurry images, the recognition accuracy of which may be insufficient without preprocessing.

AsposeOCRDefectType.ASPOSE_OCR_CURVED_TEXT enumeration

Marks image areas with curved text detected with defect_type.ASPOSE_OCR_CURVED_TEXT algorithm.

AsposeOCRDefectType.ASPOSE_OCR_BLURED_IMAGE enumeration

Marks the blurry image identified with defect_type.ASPOSE_OCR_BLURED_IMAGE algorithm. Note, that the entire image area is returned as the detection result.

Updated public APIs:

No changes.

Removed public APIs:

No changes.

Usage examples

The examples below illustrates the changes introduced in this release:

Detecting curved image areas

int main()
{
	// Provide the image  for recognition
	string file = "source.png";
	AsposeOCRInput source;
	source.url = file.c_str();
	vector<AsposeOCRInput> content = {source};
	// Enable detection of curved areas
	RecognitionSettings settings;
	settings.defect_type = defect_type::ASPOSE_OCR_CURVED_TEXT;
	// Extract text from the image
	AsposeOCRRecognitionResult result = asposeocr_recognize(content.data(), content.size(), settings);
	// Show low-contrast areas
	print(result);
	// Release the resources
	asposeocr_free_result(result);
}

std::ostream& operator<<(std::ostream& op, const rect& input)
{
	op << "top: " << input.y << "; left: " << input.x << "; width: " << input.width << "; height:" << input.height;
	return op;
}

void print(const AsposeOCRRecognitionResult& input)
{
	for (size_t p_number = 0; p_number < input.pages_amount; ++p_number)
	{
		cout << "Page " << p_number << ";\n";
		const auto& page = input.recognized_pages[p_number];
		for (size_t defect_number = 0; defect_number < page.defects_count; ++defect_number)
		{
			const auto& defect_area = page.defect_areas[defect_number];
			cout << "Curved text areas " << defect_number << ":" << defect_area.area << std::endl;
		}
	}
}